CN113494446A - Diaphragm pump abnormity detection method and device and medical equipment - Google Patents
Diaphragm pump abnormity detection method and device and medical equipment Download PDFInfo
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- CN113494446A CN113494446A CN202010266170.XA CN202010266170A CN113494446A CN 113494446 A CN113494446 A CN 113494446A CN 202010266170 A CN202010266170 A CN 202010266170A CN 113494446 A CN113494446 A CN 113494446A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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Abstract
The invention relates to the technical field of medical instruments, in particular to a method and a device for detecting the abnormity of a diaphragm pump and medical equipment, wherein the method comprises the following steps: acquiring an electric signal of the diaphragm pump; and judging whether the electric signal is in a preset range, acquiring the flow and/or the air pressure in an air path connected with the diaphragm pump when the electric signal is in the preset range, and detecting whether the diaphragm pump is abnormal according to the flow and/or the air pressure in the air path. When the electric signal of the diaphragm pump is within the preset voltage range, the flow and/or the air pressure in the air path connected with the diaphragm pump are/is combined to detect whether the diaphragm pump is abnormal or not, so that the condition that the pump is stopped due to misjudgment caused by judging whether the diaphragm pump is abnormal or not by the variable of the single slave electric signal can be avoided; namely, the abnormality detection is carried out by combining at least one variable on the basis of the electric signal, so that the accuracy of the abnormality detection can be improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a diaphragm pump abnormity detection method and device and medical equipment.
Background
In the medical process, a gas concentration monitoring module is generally adopted to monitor the concentration of respiratory gas of a patient, and can monitor common gases such as carbon dioxide, nitrous oxide, oxygen and the like and can also monitor the concentration of higher gases such as anesthetic gases. Wherein, the gas concentration monitoring module is mainly used for pumping through the diaphragm pump, namely, the expired gas of a patient is pumped at a certain speed and enters the air chamber of the monitor or the gas concentration monitoring module, and then the concentration of the measured gas is calculated.
However, if the diaphragm pump works abnormally, the latest gas updating rate in the gas chamber is affected, and the breathing gas of the patient may take a long time to enter the gas chamber for analysis, so that the condition of the patient cannot be accurately reflected to a doctor in time, error information is brought to the doctor, and the patient is delayed to be rescued in time. Therefore, the working condition of the diaphragm pump needs to be monitored in real time to ensure that the diaphragm pump in the monitor or the gas concentration detection module is in a normal working state and accurately measure the concentration value of the respiratory gas of the patient.
In order to monitor the operation of the diaphragm pump, an operating voltage or an operating power of the diaphragm pump is generally detected, and the detected operating current or operating power is compared with a corresponding threshold value to determine whether the diaphragm pump operates abnormally. However, because the discreteness of diaphragm pump, the performance of bleeding of every pump is different, and then after the long-time work of diaphragm pump, its operating voltage or operating power can change greatly, and whether the operating voltage or operating power that utilize the change of change greatly judge the diaphragm pump unusual, and the misjudgment pump stopping situation appears in the easy mistake, causes the diaphragm pump to detect the accuracy on the low side.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for detecting an abnormality of a diaphragm pump, and a medical device, so as to solve the problem of low accuracy of detecting an abnormality of a diaphragm pump.
According to a first aspect, an embodiment of the present invention provides a diaphragm pump abnormality detection method, including:
acquiring a signal of the diaphragm pump during working;
when the electric signal is within the preset range, acquiring the flow and/or the air pressure in an air path connected with the diaphragm pump;
and detecting whether the diaphragm pump is abnormal or not according to the flow and/or the air pressure in the air path.
According to the abnormal detection method for the diaphragm pump, provided by the embodiment of the invention, when the electric signal of the diaphragm pump is within the preset voltage range, the flow and/or the air pressure in the air path connected with the diaphragm pump are/is combined to detect whether the diaphragm pump is abnormal or not, so that the condition that the pump is stopped due to misjudgment caused by judging whether the diaphragm pump is abnormal or not by using the variable of the single slave electric signal can be avoided; namely, the abnormality detection is carried out by combining at least one variable on the basis of the electric signal, so that the accuracy of the abnormality detection can be improved.
With reference to the first aspect, in a first implementation of the first aspect, the electrical signal includes a voltage signal, a current signal, or a power signal.
With reference to the first aspect, in a second implementation manner of the first aspect, the acquiring a flow rate in a gas path connected to the diaphragm pump, and detecting whether the diaphragm pump is abnormal according to the flow rate in the gas path includes:
controlling the diaphragm pump to work at a first rotating speed and acquiring a first flow in the gas path;
judging whether the first flow is within a first preset flow range or not;
when the first flow rate is not within the first preset flow rate range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
when the first flow is not within the first preset flow range, controlling the diaphragm pump to work at a second rotating speed, and acquiring a second flow in the gas path;
detecting whether the diaphragm pump is abnormal based on the second flow rate.
According to the method for detecting the abnormity of the diaphragm pump, provided by the embodiment of the invention, the abnormity detection is carried out in a mode of combining the electric signal with the flow in the gas path, and when the first flow in the gas path is not within the first preset flow range, the second flow in the gas path is obtained again for carrying out abnormity detection, so that the abnormity detection accuracy is improved in a mode of measuring for multiple times.
With reference to the second embodiment of the first aspect, in a third embodiment of the first aspect, the detecting whether the diaphragm pump is abnormal based on the second flow rate includes:
judging whether the second flow is within a second preset flow range or not;
when the second flow is not within a second preset flow range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
counting a first continuous time when the diaphragm pump works at a second rotating speed within a first preset time interval, wherein the flow in the gas path is not within a second preset flow range;
and when the first continuous times is larger than a first threshold value, confirming that the diaphragm pump is abnormal.
According to the method for detecting the abnormity of the diaphragm pump, provided by the embodiment of the invention, the abnormity detection accuracy can be improved by counting the first continuous times that the flow in the gas path in the first preset time interval is not in the second preset flow range and carrying out the abnormity detection by utilizing the counted records.
With reference to the first aspect or any one of the first to third embodiments of the first aspect, in a fourth embodiment of the first aspect, the acquiring a flow rate in a gas path connected to the diaphragm pump includes:
acquiring a measured value of a differential pressure sensor arranged in the gas path;
and determining the flow in the gas path based on the measurement value of the differential pressure sensor.
With reference to the first aspect, in a fifth implementation manner of the first aspect, the acquiring an air pressure in an air path connected to the diaphragm pump, and detecting whether the diaphragm pump is abnormal according to the air pressure in the air path includes:
controlling the diaphragm pump to work at a third rotating speed, and acquiring first air pressure in the air path;
judging whether the first air pressure is within a first preset air pressure range or not;
when the first air pressure is not within the first preset air pressure range, determining that the diaphragm pump is abnormal;
or the like, or, alternatively,
when the first air pressure is not within the first preset air pressure range, controlling the diaphragm pump to work at a fourth rotating speed, and acquiring second air pressure in the air path;
detecting whether the diaphragm pump is abnormal based on the second air pressure.
According to the method for detecting the abnormity of the diaphragm pump, provided by the embodiment of the invention, the abnormity detection is carried out in a mode of combining the electric signal with the air pressure in the air path, and when the first air pressure in the air path is not within the first preset air pressure range, the second air pressure in the air path is obtained again for carrying out abnormity detection, so that the abnormity detection accuracy is improved in a mode of measuring for multiple times.
With reference to the fifth embodiment of the first aspect, in the sixth embodiment of the first aspect, the detecting whether the diaphragm pump is abnormal based on the second air pressure includes:
judging whether the second air pressure is within a second preset air pressure range or not;
when the second air pressure is not within a second preset air pressure range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
counting a second continuous time when the diaphragm pump works at a fourth rotating speed within a second preset time interval and the air pressure in the air path is not within a second preset air pressure range;
and when the second continuous times is larger than a second threshold value, confirming that the diaphragm pump is abnormal.
With reference to the first aspect, or the fifth embodiment of the first aspect, or the sixth embodiment of the first aspect, in a seventh embodiment of the first aspect, the acquiring the air pressure in the air path connected to the diaphragm pump includes:
acquiring a measurement value of an absolute pressure sensor arranged in the gas path;
and determining the air pressure in the air path based on the measurement value of the absolute pressure sensor.
With reference to the first aspect, in an eighth implementation manner of the first aspect, the acquiring a flow rate and an air pressure in an air path connected to the diaphragm pump, and detecting whether the diaphragm pump is abnormal according to the flow rate and the air pressure in the air path includes:
controlling the diaphragm pump to work at a fifth rotating speed, and acquiring a third flow and a third air pressure in the air path;
judging whether the third flow is within a third preset air pressure range or not, and whether the third air pressure is within the third preset air pressure range or not;
and when the third flow rate is not in a third preset air pressure range or the third air pressure is not in the third preset air pressure range, confirming that the diaphragm pump is abnormal.
According to a second aspect, an embodiment of the present invention further provides an abnormality detection apparatus for a diaphragm pump, including:
the acquisition module is used for acquiring an electric signal when the diaphragm pump works;
and the detection module is used for acquiring the flow and/or the air pressure in an air path connected with the diaphragm pump when the electric signal is within the preset range, and detecting whether the diaphragm pump is abnormal or not according to the flow and/or the air pressure in the air path.
According to the abnormity detection device for the diaphragm pump provided by the embodiment of the invention, when the electric signal of the diaphragm pump is within the preset voltage range, the abnormity of the diaphragm pump is detected by combining the flow and/or the air pressure in the air path connected with the diaphragm pump, so that the condition that the pump is stopped due to misjudgment caused by judging whether the diaphragm pump is abnormal by using the variable of the single slave electric signal can be avoided; namely, the abnormality detection is carried out by combining at least one variable on the basis of the electric signal, so that the accuracy of the abnormality detection can be improved.
According to a third aspect, embodiments of the present invention provide a medical apparatus comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing therein computer instructions, and the processor executing the computer instructions to perform the method for detecting an abnormality of a diaphragm pump according to the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute the method for detecting an abnormality of a diaphragm pump described in the first aspect or any one of the implementation manners of the first aspect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram showing a configuration of abnormality detection of a diaphragm pump in the embodiment of the present invention;
FIG. 2 is a flow chart of a diaphragm pump anomaly detection method according to an embodiment of the present invention;
FIG. 3 is a flow chart of a diaphragm pump anomaly detection method according to an embodiment of the present invention;
FIG. 4 is a flow chart of a diaphragm pump anomaly detection method according to an embodiment of the present invention;
FIG. 5 is a flow chart of a diaphragm pump anomaly detection method according to an embodiment of the present invention;
fig. 6 is a block diagram showing the configuration of an abnormality detection device for a diaphragm pump according to an embodiment of the present invention;
fig. 7 is a schematic hardware structure diagram of a medical device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows an optional structural schematic diagram for detecting an abnormality of a diaphragm pump in an embodiment of the present invention, as shown in fig. 1, including a gas path connected to a diaphragm pump 6, where the direction of an arrow in fig. 1 is a flow direction of gas in the gas path.
Specifically, the three-way valve 1 in fig. 1 is used to switch different channels, such as the sampling channel 11 and the atmospheric channel 12. The input end of the sampling channel 11 is used for connecting the expired air of the patient, and the output end of the atmosphere channel 12 is used for connecting the atmosphere. Sampling channel 11 and atmosphere passageway 12 switch through three-way valve 1, and sampling channel 11 and atmosphere passageway 12's output all are connected with air chamber 2, and air chamber 2 is used for calculating the gas concentration in the gas circuit. Of course, for calculating the gas concentration in the gas path, an infrared light source and a sensor and the like (not shown in fig. 1) are included in addition to the gas cell 2.
The medical device 7 is connected to the three-way valve 1, the gas chamber 2, the differential pressure sensor 4, and the absolute pressure sensor 5. The medical device 7 controls the three-way valve 1 so that the three-way valve 1 switches different channels; the medical device 7 may also calculate the gas concentration in the gas chamber.
Optionally, a differential pressure sensor 4 and an absolute pressure sensor 5 are further disposed in the gas path connected to the diaphragm pump 6. The differential pressure sensor 4 is used for acquiring a differential pressure AD value in the gas path, and the subsequent medical equipment 7 can calculate the flow in the gas path by using the differential pressure AD value; the absolute pressure sensor 5 is used for acquiring an absolute pressure AD value in the air path, and the subsequent medical equipment 7 can calculate the air pressure in the air path by using the absolute pressure AD value. Here, only a differential pressure sensor or only an absolute pressure sensor may be provided in the gas passage adjacent to the diaphragm pump 6, or both may be provided.
Specifically, when only a differential pressure sensor is provided in the gas path adjacent to the diaphragm pump 6, the medical device 7 calculates the flow rate in the gas path using the acquired differential pressure AD value to detect whether the diaphragm pump is abnormal; when only an absolute pressure sensor is arranged in the air path adjacent to the diaphragm pump 6, the medical equipment 7 calculates the air pressure in the air path by using the acquired absolute pressure AD value to detect whether the diaphragm pump is abnormal; when both a differential pressure sensor and an absolute pressure sensor are provided in the gas passage adjacent to the diaphragm pump 6, the medical device 7 can detect whether the diaphragm pump is abnormal or not by using the differential pressure AD value and the absolute pressure AD value.
Further optionally, an air volume 3 is further disposed in the air path connected to the diaphragm pump 6, and the air volume 3 is equivalent to a buffer for ensuring that the air pressure of the whole air path is relatively stable.
The abnormality detection of the diaphragm pump will be described in detail below.
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for detecting an abnormality in a diaphragm pump, it should be noted that the steps illustrated in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be executed in an order different than that illustrated herein.
In the present embodiment, a diaphragm pump abnormality detection method is provided, which can be used in the medical apparatus, and fig. 2 is a flowchart of a diaphragm pump abnormality detection method according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:
and S11, acquiring the electric signal when the diaphragm pump works.
Wherein the electrical signal comprises a voltage signal, a current signal, or a power signal.
After the monitor or the gas concentration monitoring module finishes preheating, the medical equipment controls the diaphragm pump to work at a fixed rotating speed, and the whole gas circuit is communicated with the exhaled gas or atmosphere of a patient to ensure that the diaphragm pump can normally pump. In the normal air extraction process of the diaphragm pump, the working voltage of the diaphragm pump can be acquired through the ADC function in the chip; the working voltage of the diaphragm pump may also be acquired in other manners, and the manner of acquiring the working voltage of the diaphragm pump is not limited herein.
Of course, the working current of the diaphragm pump can also be collected in the normal air exhaust process of the diaphragm pump, and the collection mode of the working current of the diaphragm pump is not limited at all here.
Further optionally, after the working voltage and the working current of the diaphragm pump are acquired, the working power of the diaphragm pump can be calculated according to the working voltage and the working current of the diaphragm pump, and the working power is used for subsequent judgment. That is, the electrical signal of the diaphragm pump acquired by the medical device may be an operating voltage, an operating current, an operating power, or the like.
And S12, judging whether the electric signal is in a preset range.
Preset ranges corresponding to the respective electrical signals are preset in the medical device, and the preset ranges may be set according to empirical values, may be obtained through tests, and the like. For example, a preset range corresponding to a voltage signal, a preset range corresponding to a current signal, a preset range corresponding to a power signal, and the like may be set in the medical device. Wherein the setting of the preset range corresponds to the electric signal acquired by the medical equipment during working.
After the medical device acquires the electric signal when the diaphragm pump works in S11, comparing the electric signal with a corresponding preset range, and executing S13 when the electric signal is within the preset range; otherwise, the diaphragm pump is confirmed to be abnormal.
That is, when the medical device determines that the electric signal of the diaphragm pump is within the preset range, it does not indicate that there is no abnormality in the diaphragm pump, and S13 needs to be continuously executed to further confirm whether there is an abnormality.
And S13, acquiring the flow and/or the air pressure in the air path connected with the diaphragm pump, and detecting whether the diaphragm pump is abnormal or not according to the flow and/or the air pressure in the air path.
When the medical equipment confirms that the electric signal of the diaphragm pump is within the preset range, the flow and/or the air pressure in an air path connected with the diaphragm pump are/is acquired, and whether the diaphragm pump is abnormal or not is detected according to the acquired flow and/or air pressure.
As for the manner of the flow rate and/or the air pressure in the air path connected to the diaphragm pump, the differential pressure sensor and the absolute pressure sensor shown in fig. 1 may be used, or the flow rate and/or the air pressure in the air path may be acquired in other manners. The manner in which the flow and/or pressure in the gas circuit is specified will be described in detail below.
When the medical equipment detects that the diaphragm pump is abnormal, alarm information can be sent out, so that a user can know the abnormal condition of the diaphragm pump at present.
The above S13 includes the following optional embodiments in 3:
(1) the medical equipment can acquire the flow in the gas path and detect whether the diaphragm pump is abnormal or not according to the flow in the gas path;
(2) the medical equipment can acquire the air pressure in the air path and detect whether the diaphragm pump is abnormal or not according to the air pressure in the air path;
(3) the medical equipment can acquire the flow and the air pressure in the air path and detect whether the diaphragm pump is abnormal or not according to the flow and the air pressure in the air path.
The embodiment of the above 3 will be described in detail in the following examples.
According to the method for detecting the abnormality of the diaphragm pump, when the electric signal of the diaphragm pump is within the preset voltage range, the flow and/or the air pressure in the air path connected with the diaphragm pump are/is combined to detect whether the diaphragm pump is abnormal or not, so that the condition that the pump is stopped due to misjudgment caused by judging whether the diaphragm pump is abnormal or not through a variable of the single slave electric signal can be avoided; namely, the abnormality detection is carried out by combining at least one variable on the basis of the electric signal, so that the accuracy of the abnormality detection can be improved.
In this embodiment, the method for detecting an abnormality of a diaphragm pump is provided, which can be used in the medical device described above, and the abnormality of the diaphragm pump is detected by taking a combination of an electrical signal of the diaphragm pump and a flow rate in the gas path as an example. Fig. 3 is a flowchart of an abnormality detection method of a diaphragm pump according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the steps of:
and S21, acquiring the electric signal when the diaphragm pump works.
Wherein the electrical signal comprises a voltage signal, a current signal, or a power signal.
Please refer to S11 in fig. 2 for details, which are not described herein.
And S22, judging whether the electric signal is in a preset range.
When the electrical signal is within the preset range, performing S23; otherwise, the diaphragm pump is confirmed to be abnormal.
And S23, acquiring the flow in the gas path connected with the diaphragm pump, and detecting whether the diaphragm pump is abnormal or not according to the flow in the gas path.
Specifically, the above S23 includes the following steps:
and S231, controlling the diaphragm pump to work at the first rotating speed and acquiring the first flow in the gas path.
The medical equipment controls the diaphragm pump to work at a first rotating speed, and the differential pressure sensor is used for measuring in the working process of the diaphragm pump, so that the medical equipment can acquire a first flow in the gas path.
The method for acquiring the first flow in the gas path can be realized by adopting the following steps:
(1) and acquiring the measurement value of a differential pressure sensor arranged in the gas path.
The differential pressure sensor is arranged in the gas circuit connected with the sensor, and during the working process of the diaphragm pump, the differential pressure sensor measures the differential pressure AD value in the gas circuit at the moment and sends the measured differential pressure AD value to the medical equipment.
(2) Based on the measurement of the differential pressure sensor, the flow in the gas circuit is determined.
The relationship between the differential pressure AD value and the flow rate is established in advance in the medical apparatus, and the relationship may be expressed in the form of a data table, a calculation formula, a curve of the differential pressure AD value and the flow rate, or the like. The specific representation form of the relation between the AD value and the flow rate of the differential pressure sensor is not limited at all, and only the fact that the flow rate in the air path can be determined by using the measured value after the medical equipment acquires the measured value of the differential pressure sensor is guaranteed.
Specifically, when the diaphragm pump works at a first rotating speed, the differential pressure sensor measures a differential pressure AD value in the air passage, and the medical equipment determines a first flow rate in the air passage by using the measured value of the differential pressure sensor.
Optionally, after the medical device acquires the measurement value of the differential pressure sensor, the measurement value may be subjected to low-pass filtering and then to smooth filtering, and the main purpose of the method is to remove noise caused by interference of external information or noise generated by the operation of the hardware board card during the data acquisition process. After processing the measured values, the flow in the gas circuit is determined.
S232, judging whether the first flow rate is in a first preset flow rate range.
After the first flow in the air path is determined, the medical equipment compares the first flow with a first preset flow range, and judges whether the first flow is within the first preset flow range. When the first flow rate is not within the first preset flow rate range, the abnormality of the diaphragm pump can be directly confirmed, or S233 can be executed; otherwise, execution continues with S231.
And S233, controlling the diaphragm pump to work at a second rotating speed and acquiring a second flow in the gas path.
The electron sets up the work of control diaphragm pump with the second rotational speed once more, and wherein the second rotational speed is different with first rotational speed, and the rotational speed of multiple difference through setting up the diaphragm pump can also monitor the diaphragm pump and lead to pumping flow suddenly high suddenly low abnormal conditions unusually, fixes a position out the problem point fast, leads to pumping flow suddenly high suddenly low promptly because pumping of diaphragm pump is unstable.
And when the diaphragm pump works at a second rotating speed, acquiring a second flow in the gas path. The second flow rate may be acquired in the same manner as the first flow rate or in a different manner.
And S234, detecting whether the diaphragm pump is abnormal or not based on the second flow.
The medical device may detect whether the diaphragm pump is abnormal using the second flow amount after acquiring the second flow amount. Specifically, the second flow rate may be compared with a flow rate threshold, or other manners may be used to perform abnormality detection, etc.
According to the method for detecting the abnormality of the diaphragm pump, the abnormality is detected in a mode of combining the electric signal with the flow in the gas path, and when the first flow in the gas path is not within the first preset flow range, the second flow in the gas path is obtained again to perform the abnormality detection, so that the accuracy of the abnormality detection is improved in a mode of measuring for many times.
As an optional implementation manner of this embodiment, the step S234 includes the following steps:
(1) and judging whether the second flow is in a second preset flow range or not.
When the second flow rate is not within the second preset flow rate range, executing (2); otherwise, S233 is executed.
(2) An abnormality of the diaphragm pump was confirmed.
As another optional implementation manner of this embodiment, the step S234 includes the following steps:
(1) and counting a first continuous time when the diaphragm pump works at a second rotating speed within a first preset time interval and the flow in the gas path is not within a second preset flow range.
The medical equipment can be provided with a counter for the first continuous times that the flow in the air path is not in the second preset flow range within the first preset time interval when the diaphragm pump works at the second rotating speed.
Specifically, the diaphragm pump is controlled to work at a second rotating speed, the medical equipment obtains a second flow rate in the air path, and when the second flow rate is not within a second preset flow rate range, the count value is increased by 1; then, the medical device acquires the second flow rate in the airway, and as long as the second flow rate is within the second preset flow rate range, the count value returns to the initial value, and the process returns to S233.
The count value is a first continuous number of times that the flow rate in the gas path is not within a second preset flow rate range within a first preset time interval. That is, the count value counts the number of consecutive times.
(2) And judging whether the first continuous times is greater than a first threshold value.
When the first continuous times is larger than a first threshold value, executing (3); otherwise, S233 is executed.
(3) And confirming the abnormity of the diaphragm pump.
It should be noted that, in the above embodiments, the first preset flow rate range, the second preset flow rate range, the first preset time interval, and the first threshold are all specifically set according to actual situations, and the numerical values thereof are not limited at all.
According to the method for detecting the abnormality of the diaphragm pump, the first continuous times that the flow in the air path is not within the second preset flow range in the first preset time interval are counted, and the abnormality detection is performed by means of counting, so that the accuracy of the abnormality detection can be improved.
In this embodiment, the detection of the abnormality of the diaphragm pump is performed by taking a combination of an electrical signal of the diaphragm pump and an air pressure in the air passage as an example. Fig. 4 is a flowchart of an abnormality detection method of a diaphragm pump according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes the steps of:
and S31, acquiring the electric signal of the diaphragm pump.
Please refer to S21 in fig. 3 for details, which are not described herein.
And S32, judging whether the electric signal is in a preset range.
When the electrical signal is within the preset range, performing S33; otherwise, the diaphragm pump is confirmed to be abnormal.
Please refer to S22 in fig. 3 for details, which are not described herein.
And S33, acquiring the air pressure in the air path connected with the diaphragm pump, and detecting whether the diaphragm pump is abnormal or not according to the air pressure in the air path.
Specifically, the above S33 includes the following steps:
and S331, controlling the diaphragm pump to work at a third rotating speed and acquiring the first air pressure in the air path.
The medical equipment controls the diaphragm pump to work at a third rotating speed, and the absolute pressure sensor is used for measuring in the working process of the diaphragm pump, so that the medical equipment can acquire the first air pressure in the air path.
The manner of obtaining the first air pressure in the air path may refer to the manner of obtaining the first flow rate in the air path in the embodiment shown in fig. 3. Different from the manner of acquiring the first flow rate in the gas path, acquiring the first air pressure in the gas path is realized by using an absolute pressure sensor arranged in the gas path connected with the diaphragm pump.
Optionally, the air pressure value obtained in real time may be unstable and fluctuate in the air path, and the pressure value of the air path may also fluctuate greatly due to jitter generated during operation of the monitor or the gas concentration monitoring module.
S332, judging whether the first air pressure is within a first preset air pressure range.
After the first air pressure in the air path is determined, the medical equipment compares the first air pressure with a first preset air pressure range, and judges whether the first air pressure is within the first preset air pressure range. When the first air pressure is not within the first preset air pressure range, the abnormality of the diaphragm pump can be directly confirmed, or S333 can be executed; otherwise, S331 is performed.
And S333, controlling the diaphragm pump to work at a fourth rotating speed and acquiring a second air pressure in the air path.
The electronic arrangement again controls the membrane pump to operate at a fourth rotational speed, wherein the fourth rotational speed is different from the third rotational speed, reducing measurement errors by setting a plurality of different rotational speeds of the membrane pump. And when the diaphragm pump works at a fourth rotating speed, acquiring a second air pressure in the air path. The second air pressure may be acquired in the same manner as the first air pressure, or may be acquired in a different manner.
And S334, detecting whether the diaphragm pump is abnormal or not based on the second air pressure.
After the medical device obtains the second air pressure, the medical device may detect whether the diaphragm pump is abnormal by using the second air pressure. Specifically, the second air pressure may be compared with an air pressure threshold, or other manners may be used to perform abnormality detection, etc.
As an optional implementation manner of this embodiment, the step S234 includes the following steps:
(1) and judging whether the second air pressure is within a second preset air pressure range.
When the second air pressure is not within a second preset air pressure range, executing (2); otherwise, S333 is executed.
(2) An abnormality of the diaphragm pump was confirmed.
As another optional implementation manner of this embodiment, the step S334 includes the following steps:
(1) and counting a second continuous time when the diaphragm pump works at a fourth rotating speed within a second preset time interval and the air pressure in the air path is not within a second preset air pressure range.
The medical equipment can be provided with a counter for a second continuous time when the air pressure in the air path is not within a second preset air pressure range within a second preset time interval when the diaphragm pump works at a fourth rotating speed.
Specifically, the diaphragm pump is controlled to work at a fourth rotating speed, the medical equipment obtains second air pressure in the air path, and when the second air pressure is not within a second preset air pressure range, the counting value is increased by 1; then, the medical device obtains the second air pressure in the air passage, and as long as the second air pressure is within the second preset air pressure range, the counting value returns to the initial value, and the process returns to step S333.
The count value is a second continuous number of times that the air pressure in the air path is not within a second preset air pressure range within a second preset time interval. That is, the count value counts the number of consecutive times.
(2) And judging whether the second continuous times is larger than a second threshold value.
When the second consecutive number is greater than a second threshold, (3) is performed; otherwise, S333 is executed.
(3) An abnormality of the diaphragm pump was confirmed.
According to the method for detecting the abnormality of the diaphragm pump, the second continuous times that the air pressure in the air path is not within the second preset air pressure range within the second preset time interval are counted, and the abnormality detection is performed by using the counting result, so that the accuracy of the abnormality detection can be improved.
It should be noted that, in the above embodiments, the second preset air pressure range, the second preset time interval, and the second threshold are all specifically set according to actual situations, and the numerical values thereof are not limited at all.
In this embodiment, the combination of the electrical signal of the diaphragm pump and the air pressure and flow rate in the air path is taken as an example to detect the abnormality of the diaphragm pump. Fig. 5 is a flowchart of an abnormality detection method of a diaphragm pump according to an embodiment of the present invention, as shown in fig. 5, the flowchart includes the steps of:
and S41, acquiring the electric signal when the diaphragm pump works.
Please refer to S31 in fig. 4 for details, which are not described herein.
And S42, judging whether the electric signal is in a preset range.
When the electrical signal is within the preset range, performing S43; otherwise, the diaphragm pump is confirmed to be abnormal.
Please refer to S32 in fig. 4 for details, which are not described herein.
And S43, acquiring the air pressure in the air path connected with the diaphragm pump, and detecting whether the diaphragm pump is abnormal or not according to the air pressure in the air path.
Specifically, the above S43 includes the following steps:
and S431, controlling the diaphragm pump to work at a fifth rotating speed, and acquiring a third flow and a third air pressure in the air path.
And the medical equipment controls the diaphragm pump to work at a fifth rotating speed, and acquires a third flow and a third air pressure in the air path in the working process of the diaphragm pump. Please refer to the description about the first flow obtaining manner in the embodiment shown in fig. 3 for the obtaining manner of the third flow; for the third air pressure obtaining manner, please refer to the description of the first air pressure obtaining manner in the embodiment shown in fig. 4.
S432, judging whether the third flow is in a third preset air pressure range or not, and whether the third air pressure is in the third preset air pressure range or not.
When the third flow rate is not within a third preset air pressure range or the third air pressure is not within the third preset air pressure range, executing S433; otherwise, S431 is performed.
And S433, confirming that the diaphragm pump is abnormal.
As an optional implementation manner of this embodiment, when the third flow rate is not within the third preset air pressure range or the third air pressure is not within the third preset air pressure range, the diaphragm pump may be continuously controlled to operate at the sixth rotation speed, the fourth flow rate and the fourth air pressure in the air path are obtained, and the abnormality detection of the diaphragm pump is performed based on the fourth flow rate and the fourth air pressure.
Please refer to S234 and its corresponding optional implementation in the embodiment shown in fig. 3, and refer to S334 and its corresponding optional implementation in the embodiment shown in fig. 4.
In this embodiment, a device for detecting an abnormality of a diaphragm pump is further provided, and the device is used to implement the above embodiments and preferred embodiments, which have already been described and will not be described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
The present embodiment provides an abnormality detection device for a diaphragm pump, as shown in fig. 6, including:
an obtaining module 51, configured to obtain an electrical signal of the diaphragm pump; wherein the electrical signal comprises an operating voltage or an operating current;
the judging module 52 is configured to judge whether the working signal is within a preset range;
and the detection module 53 is configured to, when the electrical signal is within the preset range, acquire a flow rate and/or an air pressure in an air path connected to the diaphragm pump, and detect whether the diaphragm pump is abnormal according to the flow rate and/or the air pressure in the air path.
According to the abnormity detection device for the diaphragm pump, when the electric signal of the diaphragm pump is within the preset voltage range, the abnormity of the diaphragm pump is detected by combining the flow and/or the air pressure in the air path connected with the diaphragm pump, so that the condition that the pump is stopped due to misjudgment caused by judging whether the diaphragm pump is abnormal by the variable of the single slave electric signal can be avoided; namely, the abnormality detection is carried out by combining at least one variable on the basis of the electric signal, so that the accuracy of the abnormality detection can be improved.
The abnormality detection device of the diaphragm pump in this embodiment is in the form of a functional unit, where the unit refers to an ASIC circuit, a processor and a memory executing one or more software or fixed programs, and/or other devices that can provide the above-described functions.
Further functional descriptions of the modules are the same as those of the corresponding embodiments, and are not repeated herein.
An embodiment of the present invention further provides a medical apparatus having the diaphragm pump abnormality detection device shown in fig. 6.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a medical apparatus according to an alternative embodiment of the present invention, and as shown in fig. 7, the medical apparatus may include: at least one processor 61, such as a CPU (Central Processing Unit), at least one communication interface 63, memory 64, at least one communication bus 62. Wherein a communication bus 62 is used to enable the connection communication between these components. The communication interface 63 may include a Display (Display) and a Keyboard (Keyboard), and the optional communication interface 63 may also include a standard wired interface and a standard wireless interface. The Memory 64 may be a high-speed RAM Memory (volatile Random Access Memory) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The memory 64 may optionally be at least one memory device located remotely from the processor 61. Wherein the processor 61 may be in connection with the apparatus described in fig. 6, an application program is stored in the memory 64, and the processor 61 calls the program code stored in the memory 64 for performing any of the above-mentioned method steps.
The communication bus 62 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus 62 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
The memory 64 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviated: HDD) or a solid-state drive (english: SSD); the memory 64 may also comprise a combination of the above types of memory.
The processor 61 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of CPU and NP.
The processor 61 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
Optionally, the memory 64 is also used to store program instructions. The processor 61 may call program instructions to implement the diaphragm pump anomaly detection method as shown in the embodiments of fig. 2 to 5 of the present application.
The embodiment of the invention also provides a non-transitory computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the diaphragm pump abnormity detection method in any method embodiment. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (12)
1. A method for detecting an abnormality of a diaphragm pump, comprising:
acquiring an electric signal when the diaphragm pump works;
judging whether the electric signal is in a preset range or not;
and when the electric signal is within the preset range, acquiring the flow and/or the air pressure in an air path connected with the diaphragm pump, and detecting whether the diaphragm pump is abnormal or not according to the flow and/or the air pressure in the air path.
2. The method of claim 1, wherein the electrical signal comprises a voltage signal, a current signal, or a power signal.
3. The method according to claim 1, wherein the obtaining of the flow rate in a gas path connected to the diaphragm pump and the detecting whether the diaphragm pump is abnormal according to the flow rate in the gas path comprises:
controlling the diaphragm pump to work at a first rotating speed and acquiring a first flow in the gas path;
judging whether the first flow is within a first preset flow range or not;
when the first flow rate is not within the first preset flow rate range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
when the first flow is not within the first preset flow range, controlling the diaphragm pump to work at a second rotating speed, and acquiring a second flow in the gas path;
detecting whether the diaphragm pump is abnormal based on the second flow rate.
4. The method of claim 3, wherein the detecting whether the diaphragm pump is abnormal based on the second flow rate comprises:
judging whether the second flow is within a second preset flow range or not;
when the second flow is not within a second preset flow range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
counting a first continuous time when the diaphragm pump works at a second rotating speed within a first preset time interval, wherein the flow in the gas path is not within a second preset flow range;
and when the first continuous times is larger than a first threshold value, confirming that the diaphragm pump is abnormal.
5. The method according to any of claims 1-4, wherein said obtaining a flow in a gas circuit connected to said diaphragm pump comprises:
acquiring a measured value of a differential pressure sensor arranged in the gas path;
and determining the flow in the gas path based on the measurement value of the differential pressure sensor.
6. The method according to claim 1, wherein the obtaining of the air pressure in an air path connected to the diaphragm pump and the detecting of the abnormality of the diaphragm pump according to the air pressure in the air path comprises:
controlling the diaphragm pump to work at a third rotating speed, and acquiring first air pressure in the air path;
judging whether the first air pressure is within a first preset air pressure range or not;
when the first air pressure is not within the first preset air pressure range, determining that the diaphragm pump is abnormal;
or the like, or, alternatively,
when the first air pressure is not within the first preset air pressure range, controlling the diaphragm pump to work at a fourth rotating speed, and acquiring second air pressure in the air path;
detecting whether the diaphragm pump is abnormal based on the second air pressure.
7. The method of claim 6, wherein the detecting whether the diaphragm pump is abnormal based on the second air pressure comprises:
judging whether the second air pressure is within a second preset air pressure range or not;
when the second air pressure is not within a second preset air pressure range, confirming that the diaphragm pump is abnormal;
or the like, or, alternatively,
counting a second continuous time when the diaphragm pump works at a fourth rotating speed within a second preset time interval and the air pressure in the air path is not within a second preset air pressure range;
and when the second continuous times is larger than a second threshold value, confirming that the diaphragm pump is abnormal.
8. The method of claim 1, 6 or 7, wherein said obtaining the air pressure in the air circuit connected to the diaphragm pump comprises:
acquiring a measurement value of an absolute pressure sensor arranged in the gas path;
and determining the air pressure in the air path based on the measurement value of the absolute pressure sensor.
9. The method according to claim 1, wherein the obtaining of the flow rate and the air pressure in an air path connected to the diaphragm pump and the detecting whether the diaphragm pump is abnormal according to the flow rate and the air pressure in the air path comprises:
controlling the diaphragm pump to work at a fifth rotating speed, and acquiring a third flow and a third air pressure in the air path;
judging whether the third flow is within a third preset air pressure range or not, and whether the third air pressure is within the third preset air pressure range or not;
and when the third flow rate is not in a third preset air pressure range or the third air pressure is not in the third preset air pressure range, confirming that the diaphragm pump is abnormal.
10. An abnormality detection device for a diaphragm pump, comprising:
the acquisition module is used for acquiring an electric signal when the diaphragm pump works;
the judging module is used for judging whether the working signal is in a preset range or not;
and the detection module is used for acquiring the flow and/or the air pressure in an air path connected with the diaphragm pump when the electric signal is within the preset range, and detecting whether the diaphragm pump is abnormal or not according to the flow and/or the air pressure in the air path.
11. A medical device, comprising:
a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the diaphragm pump abnormality detection method according to any one of claims 1 to 9.
12. A computer-readable storage medium characterized in that the computer-readable storage medium stores computer instructions for causing the computer to execute the diaphragm pump abnormality detection method according to any one of claims 1 to 9.
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